Assigbttb to gotta teansmission



Feb-20, 1923. 1,446,326

A. H. ASPROOTH POWER TAKEOFF FOR CHANGE SPEED TRANSMISSIONS File Aug. 4, 1919 2 sheets-sheet 1 Feb. 20, 1923. 1 446326 A. H. ASPROOTH POWER TAKE-OFF FOR CHANGE SPEED TRANSMISSIONS Filed Au '4, 1919 2 sheets' -sheet 2 Patented Feb. 2%, 19235. I I l l t 'I I i AXEL rrcr; esrnoorn, or nocnronzo, rumors, as ers-Monro oo r're rJenner:rssron. CQMPANY, or nouns-can, trimmers, A conrone'rron or ILLINOIS.

rowan TAKE-err noncnanen-srrnio rnansmrssronsq Application"iiIecIAuguStA,1919. Seria1No.'315,100. I

To (all whom-it may co rn: n power take off'with respect to the position Be it known that I, Axnn Ha. Asrnoo'rn, or the shifting means which connects and a citizen of the United States, residingfat disconnects the power takeoff shaft and the Rockford, in the county of: l l inneloagoand transmission gearing. It willhe understood.

. Stat oi Illinois, have invented certain new of course, that the iforegoingis simply a gen- 60 and useful lu'iprovements in Powenialre. c 'al S atement of certain uses of my im-' Otis for Change-tlpeed Transmissions, olprovements, and that'the latter is capahleoi' which the following is a specification. broad application. I

This inventio t i i i n r l t Another object is to provide a power take 10 change speed gear transmissions h ore oft'unit'oi' the general character described. 65 particular reference to the provision of which Shall be of such simple and novel conmeans for delivering power trOmthe trans Structi0nas to be capable of economical pro mission through sources "other than the duction and which shall serve practically dri en h ft th f, 0 and efiicientlythe purposes desired. d

In that class of transmissions particularly t r O j cts and attendant advantages 70 adapted forfmotor trucks and tractors. it is Will be app ated as the invention becomes desired to utilize the power for other purh r understood by reference to the folpcses than simply propelling the vehicle.- 10w1ng description'when' considered in con- That is, in some instances it'is' desired to nection with the accompanying drawings, in

utilize the power from the 'transmission'to W Y I i i i operate a lifting mechanism or crane on: the. g e 1, iS a sideclevation ofthe front truck or for operating a pump ra": g l, end'of a change speed transmission equipped tor, of for numerous other purposes. It Wlth'my improvements; follows that inasmuch as the conditions and gure 2, a front elevation of the/trans;

requirements for these varioususes of power miSSiOIXIShOWiIIg' the po er take-0ft unit at- 80 are different in most cases, the -point 'of' tached'to the right hand Side e fi power take-ofl must he accordingly suited to Figure 3, an enlarged pla Scc i na1 View the particular requirements athand i" x taken"sulostantiallyjon the line 3-3of Fig- The primary object of the present inven 11136 i i i I 1 I tion is to provide a power take-oil" o'fsuch', y mp ovements are'applicahle to prac- 85 novel design as to meet thewarying 'condh'wtically any change speed transmission. such tions and requirements of the trades 1n as. 18 used on motor vehicles especially other words, I have provided apower take trucks and tractors. "In the present case, I ()ff unit adaptedto be mounted in? any :a, 'hSJVQlShOWD. llOf PUI'POSQ 0f lllllStIZttlOIl 21 plurality of positions in co-operative rengear transmission of the selective type illus-, 90 tion with a transmission mechanism tor'the rate'd fu ly ill -v Patent purpose of delivering power at any of a plus is deemed unnecessaryto illustrate'any more rality of points coi'isidered adequate for the T Ofthe tran mission construction than is various requirements mentioned. For ex eeded for an unders anding of the present 1 ample, my i ti t l t s a 1 b invention, consequentlv,I have simply shown 95 ject the provision of a powertake-offunit in outline-atransmission casing, of convenin the formot an auxiliary casing carrying i t O des gn g d. generally y the a, power ta1{e ()ff h ft d d i in ng ch'aractenG. The driving shaft '7 extends therefor, together with 'nieans 'itor hreakingv from thefront end :ofthe casing and carries the driving train when desired, and. the a gear 8 in'mesh with agear 9 which in 100 mounting o't this self-contained power takethis'particular transmiSsio-ndrives the council? unit in of a plurality of positions on tershaft. It may he concluded therefore, the transmission casing; with the (lilif that'the gear?) is a part of thechangef means in driving relation with. the train speed gearing within'the transmission cas mission grearinp f It also contemplates .in-Fing, and since this particular gear is. in 105 version oi the power take-oil? unitin' either constant driving connection, with the shaft oi said positions to change the point of 7 without transmitting power'to thewheels, power take-oil", or if conditions require; reit "serves as a satisfaetoryfagency through mounting of the power take-o'iishaft on the which to transmit pow-er to the talre-oili auxiliarycasin 'soas to changethe point of unitwhi'ch'wi'll now he descrihed gfljt'lwill 110,

generally by character 14,- is attachedv to the right hand side ofthe transmission'casmg, covering-the opening 13 therenn This auxiliary casing in theembodinient shown for purpose of'illustration consistsofside walls15 and 16 joinediby top and bottom walls 17 and 18 respectively the casing being open from end to end ani'dfprovided with a cover cap 19 closing; its outer end and with a. bolt=rceiviirg flange 21 at its. inner end. through which fla-ngebolts 22 aiepassed for rigidly securing; the auxiliary casingto:

the. transmission casing. The side walls 1:)

and 16 of theauxiliary casing are shaped for the reception of bearings 23and2i re spectively, in which is. journaled a. power take-01f shaft 25. It will be noted that this shaft is of enlarged diameter. intermediate the ends of the bearings23 and 24.- sothat this enlarged portion 26 presents sln-mlders engaged by the innerendsot said bearings for holding the shaft in position. against.

longitudinal displacement; The rnd 27 of the shaft extends beyond the bearing '23 and is adapted to have rigidly attached thereto either a driiing gem sprocket or pulley for transmittingithe drive for whatever purpose required. The peace 'r dei ivoryshaft 27 is equipped with a fixed gear: 23 disposed centrally betweenthe side walls 15-and 16. This gear 28 is permanently in mesh with a slnftahle intermediate gear 29' which is freely rotatable upon-lint mounted to move longitudinally with a shii'tingshatt or red 61 journaled in bearings 32. and-#1:. in the side walls of the auxiliary casing. The end 3 y of the shaft-=3! adapted. to be manually *sl'iifiel'by the operator through the agency of any suitable connection for shiftii'ig the gear 29 into andont of mesh with the gear 9 in the transmission casing;

As showni ilainly in Figure 3. the inte oi". the gear 29 is substantiallytwice the width o'f the gear 28- and itfollows that these gears will remain permanently in mesh when the gear 29 is shifted into and out of mesh with the near Aj spring pressed bail plunger 35 36 and-37 series t'oiiold tli e shiftin ro :in either osition, and the pin strand d by the M1115 and located in the key xi-ay- 39 in the shaft holds it against roadie movemeat. The shifting mevaaent of the shaft in] opposite, directi ns is limitedty :eonitaie t J of the sides 11- age .aeagaaa the stops.

engageable in the notches- 42 and 43 at the inner side of the walls and 16 respectively.

'From the foregoing it will be manifest that thecasing 14L carries an organization of parts adapted for power take-off purposes and to be secured as a unitary structure to the casing. of a. change speed transmission in operative relation with the gearing therein. The power takeoff casing may be secured to either side of the transmission casing, that is, in a position covering either the opening 13 or 13, so as to deliver the power fronr either side of the trans-mission. It will be observed that the bolt openings in the transmission casing for the reception of bolts 22 are arranged similarly at each side of the transmission and are further arranged so that the casing 1 lmay be attached. in a position inverted from that shown. Such inversion would position the power delivery shaft at the front of the transmission and the operating shaft 34 at the rear thereof, viewing Figure 1. In such case, the shiftable gear 29 would be out of engagement with the gear 9 when the spring pressed ball 25 is located in the notch 36. It will thus be seen that'the casing 14: may be attached to the transmission casing in any of four positions. Provision has also been made for inverting the position of the power delivery shaft 25 without changing the position of the casing 14. Viewing Figure 3, it will be plainly evident that the bearings 23 and 24 have been so propor tioned and'the shaft so shaped as to permit removal of the latter and replacement with the driving end 27 extending from the forward end, that is, from the bearing 24 instead of from the rear of the casing as shown. By reason of the novel construction of the power take-oil unit, it is possible without any additional cost or the requirement of additional or extra parts, to place the power take-off shaft in any of a plurality of different positions with respect to the transmission proper. and in each of which positions an operative driving connection is maintained with the gearing); in the transmission. Thus, a power take-off unit of this character is especiallydesirable for the various conditions and requirements of the trade.

It believed that the foregoing convoys a clear understanding of the objects of the invention and "while I'have illustrated and describedbut a single working einlmdiinent thereof it should be understood that various changes might be made in the construction and arrangement without departing from thespi-rit and scope of the invention as expressed in the appended claims; in which I claim:

1. The combination with a transmission mechanism. including a gear, of a DDWer teakesefi mechanism adaptedto be driven by said gear, comprising an I elongated gear axially shiftable into and out of mesh with said transmission gear, a power take-off shaft, and a gear fixed to said shaft and permanently in mesh with said shiftable gear in any SlllftGd'pOSitlOIl thereof.

2. The combination with a gear transmissioii mechanism, the casing of which has an opening in each side wall in lateral alignment with the inclosed gearing, ofa selfcontained power take off unit compr sing an auxiliary :casing equipped with a power take-off shaft, a gear for driving said shaft and means for connectingsaid gear with and disconnecting it from said shaft, and

means for connecting said "unit to either side i of the transmission casing covering the pening therein and with thepower takeoff gear in operative relation tothe transmission gearing.

3. The combination with a transmission shiftable driving gear and a driven gear permanently inv mesh therewith, and means for securing said gear casing to either side of the transmission with said driving gear extending through the respective opening in said transmission casing and in mesh with said gear therein. 4. The combination of a transmission casing inclosing change'speed gearing and having an opening in one side in lateral alignment with one of the gears, and a power take-off unit comprising an auxiliary casing detachably secured to the transmission casing over the opening therein, a shiftable gear mounted within said auxiliary casing and adapted to mesh with said gear in the transmission casing, and a power delivery shaft mounted on said auxiliary casing and equipped with a gear permanently in mesh with said shiftable gear.

The combination of a transmission casing inclosing change speed gearing and having an opening in each side in lateral align- -ment with one of the gears therein, an auxiliary casing adapted to be secured to the transmission casing on either side thereof, covering either of said openings therein, a shiftable gear carried by said auxiliary casing, a power takeoff shaft carried by said auxiliary casing and equipped therein with a gear permanently 111 mesh with the, shiftable gear, said shiftable gear being adapted to be-shifted into and out of mesh with said gear in the transmission casing in either able shaft and a powertake-off shaft, a gear mounted on the shiftable shaft and adapted 'to be moved into and out of mesh with a gear in the transmission casingby shifting saidshaft longitudinally, and a gear fixed to the power take-off shaftand permanently in mesh with said shiftable gear. H

" 7 The combination of a transmission cas ing inclosing changespeedgearing, an auxiliary casing attached to the transmission casing and carrying alongitudinally shiftable shaft and'yaj power take-off shaft, a

gear mounted on the shiftable shaft and adapted to be moved into and out of mesh with a gear in the transmission casing by shifting said shaft longitudinally, a gear fixed to the power take-off shaft and per ma iently in mesh with said shiftable gear, said shift-able shaft having an operable end extending'beyondthe exterior of the front wall of the auxiliary casing, and said aux- 'nient with one of the gears therein, and a power take-off unit comprising an auxiliary casing adaptedto be secured to the transmission casing at either side thereof coverii'igthe opening in such side, a power delivery shaft carried by said auxiliary casing, and gearing carried by said casing and arranged so as to'be in cooperative relation with said gear in the transmission casing when the auxiliary casing is attached to either side of the transmission casing.

'9. Thecombination of a transmission casing inclosing change speed gearing, and a power take-off unit comprising an auxiliary casing carrying a power take-off shaft and permanently meshing gears one of whichis adaptedto be shifted into and out of mesh with one of the gears in the transmission casing, and means for connecting" said auxiliai'y casing to the transmission casing/in any of a plurality of positions in which the power take-off gearing is in co-operative relation to the change speed gearing.

10. The combination of a transmission asinginclosing change speed gearing and halllllg attll opening in each side in lateral alignment with one of the gears therein. and a power take-off unit comprising an auxiliary casing equipped with a power take-off shaft and with means adapted to be driven from said gear in the transmission casing for driving said power takeoff shaft, and means for attaching the auxiliary casing to the transmission casing at either side thereof covering the opening therein and with said driving means in :0 operative relation with sa d transm ss on gear.

11. The combination with a gear trans mission mechanisl'n, oi a powertake-off the first mentioned gear and adapted torhei shifted into and out of mesh with a transmission gear, and means whereby said shaft may be reversed in the casing without ,dis-.

turbing the relation of said gears.

12. Thecon'lbination, with a gear transnnssion mechanism, of a power takesofi shaft, a gear fixed thereon a gear permanently in mesh with the first mentioned gear and adapted to mesh with a gear of said transmission mechanism, means for shifting the second mentioned gear into and out of mesh with said transmission gear, an anxlhary oasing carrying said first and second mentioned gears andsaid shaftand 0011-.

stituting therewith a power take-off unit, andmeans for connecting said unit to the transmission casing in any of a plurality of different positions.

AXEL HJ. ASPROOTI-I. 

